Key specifications Optical design: refractor type with focal length 400 mm and clear aperture 50 mm Visual capability: can observe objects down to magnitude 10.49 Resolution: theoretical resolution 2.800 arcseconds, equivalent to distinguishing two objects 1.357 cm apart at a distance of 1000 meters Light and magnification: light power 0.139 and zoom capability up to 90x What this means for you Straightforward operation: a simple refractor setup that requires minimal alignment and routine maintenance Balanced performance: a compact aperture and reasonable focal length deliver clear views with steady magnification Practical clarity: the resolution and magnification allow you to identify fine details on bright targets and distant objects Use scenarios Night sky observation: suitable for viewing the Moon, brighter planets, star clusters, and other celestial objects within the stated magnitude limit Distant terrestrial viewing: useful for observing distant landscapes, landmarks, or wildlife details at long range when conditions permit Educational or field use: appropriate for demonstrations, clubs, or learning environments where clear optics and reliable performance are valued Notes Specifications are stated as provided and reflect core capabilities of the product No additional accessories or compatibility details are included in this description Performance figures are theoretical values and may vary with observing conditions and setup